./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array13_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array13_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:03:22,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:03:22,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:03:22,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:03:22,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:03:22,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:03:22,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:03:22,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:03:22,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:03:22,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:03:22,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:03:22,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:03:22,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:03:22,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:03:22,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:03:22,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:03:22,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:03:22,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:03:22,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:03:22,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:03:22,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:03:22,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:03:22,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:03:22,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:03:22,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:03:22,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:03:22,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:03:22,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:03:22,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:03:22,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:03:22,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:03:22,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:03:22,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:03:22,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:03:22,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:03:22,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:03:22,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:03:22,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:03:22,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:03:22,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:03:22,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:03:22,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 05:03:22,957 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:03:22,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:03:22,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:03:22,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:03:22,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:03:22,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:03:22,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:03:22,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:03:22,960 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:03:22,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:03:22,961 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:03:22,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 05:03:22,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:03:22,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:03:22,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:03:22,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:03:22,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:03:22,962 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:03:22,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:03:22,962 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:03:22,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:03:22,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:03:22,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:03:22,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:03:22,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:03:22,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:03:22,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:03:22,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:03:22,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 05:03:22,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 05:03:22,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:03:22,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:03:22,964 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:03:22,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:03:22,964 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:03:22,964 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78699f7813351c3df7f7fcab3bf98fffd7a92c5cc679034a9d139e9169232d7e [2023-02-17 05:03:23,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:03:23,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:03:23,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:03:23,221 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:03:23,222 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:03:23,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array13_pattern.c [2023-02-17 05:03:24,192 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:03:24,358 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:03:24,358 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array13_pattern.c [2023-02-17 05:03:24,363 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba27cc0b/c01cf7fa48d4404e9d1269cbf49495e7/FLAG0cca0685c [2023-02-17 05:03:24,382 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba27cc0b/c01cf7fa48d4404e9d1269cbf49495e7 [2023-02-17 05:03:24,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:03:24,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:03:24,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:03:24,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:03:24,390 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:03:24,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1b2bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24, skipping insertion in model container [2023-02-17 05:03:24,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:03:24,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:03:24,538 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array13_pattern.c[1342,1355] [2023-02-17 05:03:24,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:03:24,576 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:03:24,585 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array13_pattern.c[1342,1355] [2023-02-17 05:03:24,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:03:24,624 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:03:24,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24 WrapperNode [2023-02-17 05:03:24,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:03:24,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:03:24,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:03:24,626 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:03:24,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,663 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 95 [2023-02-17 05:03:24,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:03:24,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:03:24,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:03:24,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:03:24,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,726 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:03:24,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:03:24,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:03:24,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:03:24,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (1/1) ... [2023-02-17 05:03:24,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:03:24,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:24,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 05:03:24,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 05:03:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:03:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 05:03:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 05:03:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 05:03:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 05:03:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 05:03:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:03:24,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:03:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 05:03:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 05:03:24,897 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:03:24,899 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:03:25,103 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:03:25,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:03:25,107 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-17 05:03:25,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:03:25 BoogieIcfgContainer [2023-02-17 05:03:25,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:03:25,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:03:25,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:03:25,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:03:25,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:03:24" (1/3) ... [2023-02-17 05:03:25,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e821284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:03:25, skipping insertion in model container [2023-02-17 05:03:25,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:03:24" (2/3) ... [2023-02-17 05:03:25,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e821284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:03:25, skipping insertion in model container [2023-02-17 05:03:25,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:03:25" (3/3) ... [2023-02-17 05:03:25,126 INFO L112 eAbstractionObserver]: Analyzing ICFG array13_pattern.c [2023-02-17 05:03:25,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:03:25,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:03:25,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:03:25,180 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@277882a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:03:25,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:03:25,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 05:03:25,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 05:03:25,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:25,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:25,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:25,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -152131175, now seen corresponding path program 1 times [2023-02-17 05:03:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:25,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476523172] [2023-02-17 05:03:25,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:03:25,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:25,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476523172] [2023-02-17 05:03:25,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 05:03:25,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247935505] [2023-02-17 05:03:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:25,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:25,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:25,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:25,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 05:03:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:03:25,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 05:03:25,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:03:25,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:03:25,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247935505] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:03:25,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:03:25,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 05:03:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446929919] [2023-02-17 05:03:25,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:03:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 05:03:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:25,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 05:03:25,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:03:25,375 INFO L87 Difference]: Start difference. First operand has 31 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:03:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:25,393 INFO L93 Difference]: Finished difference Result 59 states and 91 transitions. [2023-02-17 05:03:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 05:03:25,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-17 05:03:25,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:25,398 INFO L225 Difference]: With dead ends: 59 [2023-02-17 05:03:25,398 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 05:03:25,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 05:03:25,403 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:25,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:03:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 05:03:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-17 05:03:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 05:03:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2023-02-17 05:03:25,429 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 15 [2023-02-17 05:03:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:25,430 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2023-02-17 05:03:25,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:03:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2023-02-17 05:03:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 05:03:25,431 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:25,432 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:25,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 05:03:25,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 05:03:25,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:25,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:25,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2136147464, now seen corresponding path program 1 times [2023-02-17 05:03:25,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:25,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97633579] [2023-02-17 05:03:25,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:25,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:25,665 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:25,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399626734] [2023-02-17 05:03:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:25,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:25,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:25,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:25,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 05:03:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:03:25,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 05:03:25,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 05:03:25,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:03:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:25,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97633579] [2023-02-17 05:03:25,831 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:25,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399626734] [2023-02-17 05:03:25,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399626734] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:03:25,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:03:25,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 05:03:25,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071836390] [2023-02-17 05:03:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:03:25,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 05:03:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 05:03:25,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-17 05:03:25,838 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 05:03:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:25,937 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2023-02-17 05:03:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 05:03:25,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-02-17 05:03:25,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:25,938 INFO L225 Difference]: With dead ends: 58 [2023-02-17 05:03:25,939 INFO L226 Difference]: Without dead ends: 39 [2023-02-17 05:03:25,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-17 05:03:25,940 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:25,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 56 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:03:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-17 05:03:25,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2023-02-17 05:03:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 05:03:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2023-02-17 05:03:25,963 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2023-02-17 05:03:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:25,963 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2023-02-17 05:03:25,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 05:03:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2023-02-17 05:03:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-17 05:03:25,964 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:25,968 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:25,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 05:03:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 05:03:26,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1984127527, now seen corresponding path program 1 times [2023-02-17 05:03:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054693872] [2023-02-17 05:03:26,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:26,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:26,213 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553189217] [2023-02-17 05:03:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:26,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:26,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 05:03:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:03:26,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 05:03:26,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 05:03:26,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:03:26,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:26,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054693872] [2023-02-17 05:03:26,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553189217] [2023-02-17 05:03:26,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553189217] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:03:26,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:03:26,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 05:03:26,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923531530] [2023-02-17 05:03:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:03:26,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 05:03:26,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 05:03:26,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 05:03:26,281 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 05:03:26,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:26,310 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-02-17 05:03:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 05:03:26,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-02-17 05:03:26,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:26,311 INFO L225 Difference]: With dead ends: 61 [2023-02-17 05:03:26,311 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 05:03:26,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 05:03:26,313 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 25 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:26,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 48 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:03:26,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 05:03:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-02-17 05:03:26,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 05:03:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2023-02-17 05:03:26,318 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 34 [2023-02-17 05:03:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:26,318 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2023-02-17 05:03:26,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 05:03:26,318 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2023-02-17 05:03:26,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 05:03:26,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:26,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:26,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 05:03:26,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:26,525 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:26,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:26,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1380575367, now seen corresponding path program 1 times [2023-02-17 05:03:26,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:26,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029449622] [2023-02-17 05:03:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:26,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:26,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:26,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910345781] [2023-02-17 05:03:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:26,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:26,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:26,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:26,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 05:03:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:03:26,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 05:03:26,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 05:03:26,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:03:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 05:03:26,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:26,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029449622] [2023-02-17 05:03:26,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:26,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910345781] [2023-02-17 05:03:26,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910345781] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:03:26,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:03:26,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2023-02-17 05:03:26,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099578717] [2023-02-17 05:03:26,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:03:26,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-17 05:03:26,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:26,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-17 05:03:26,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-02-17 05:03:26,908 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 18 states, 16 states have (on average 2.4375) internal successors, (39), 13 states have internal predecessors, (39), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 05:03:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:27,224 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2023-02-17 05:03:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-17 05:03:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.4375) internal successors, (39), 13 states have internal predecessors, (39), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 38 [2023-02-17 05:03:27,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:27,227 INFO L225 Difference]: With dead ends: 129 [2023-02-17 05:03:27,227 INFO L226 Difference]: Without dead ends: 108 [2023-02-17 05:03:27,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=803, Unknown=0, NotChecked=0, Total=992 [2023-02-17 05:03:27,228 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 142 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:27,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 187 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 05:03:27,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-17 05:03:27,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 58. [2023-02-17 05:03:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 48 states have internal predecessors, (57), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 05:03:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2023-02-17 05:03:27,243 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 38 [2023-02-17 05:03:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:27,244 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2023-02-17 05:03:27,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.4375) internal successors, (39), 13 states have internal predecessors, (39), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 05:03:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2023-02-17 05:03:27,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-17 05:03:27,245 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:27,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:27,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 05:03:27,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:27,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1967381381, now seen corresponding path program 1 times [2023-02-17 05:03:27,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:27,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884301054] [2023-02-17 05:03:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:27,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:27,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:27,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697048635] [2023-02-17 05:03:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:27,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:27,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:27,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 05:03:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:03:27,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-17 05:03:27,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:27,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-02-17 05:03:27,672 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:03:27,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 132 [2023-02-17 05:03:27,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 11 [2023-02-17 05:03:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 05:03:27,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:03:27,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2023-02-17 05:03:27,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 82 [2023-02-17 05:03:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 05:03:27,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:27,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884301054] [2023-02-17 05:03:27,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:27,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697048635] [2023-02-17 05:03:27,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697048635] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:03:27,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:03:27,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2023-02-17 05:03:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389616504] [2023-02-17 05:03:27,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:03:27,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-17 05:03:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:27,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-17 05:03:27,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2023-02-17 05:03:27,988 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 05:03:29,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:29,192 INFO L93 Difference]: Finished difference Result 134 states and 160 transitions. [2023-02-17 05:03:29,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-17 05:03:29,193 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 38 [2023-02-17 05:03:29,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:29,194 INFO L225 Difference]: With dead ends: 134 [2023-02-17 05:03:29,194 INFO L226 Difference]: Without dead ends: 128 [2023-02-17 05:03:29,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 963 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=655, Invalid=2767, Unknown=0, NotChecked=0, Total=3422 [2023-02-17 05:03:29,196 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 231 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:29,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 172 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 05:03:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-02-17 05:03:29,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2023-02-17 05:03:29,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 84 states have internal predecessors, (100), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 05:03:29,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 122 transitions. [2023-02-17 05:03:29,221 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 122 transitions. Word has length 38 [2023-02-17 05:03:29,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:29,222 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 122 transitions. [2023-02-17 05:03:29,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 states have internal predecessors, (53), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 05:03:29,223 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 122 transitions. [2023-02-17 05:03:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-17 05:03:29,227 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:29,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:29,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-17 05:03:29,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:29,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:29,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:29,433 INFO L85 PathProgramCache]: Analyzing trace with hash -707639139, now seen corresponding path program 2 times [2023-02-17 05:03:29,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773533116] [2023-02-17 05:03:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:29,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:29,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:29,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [515329049] [2023-02-17 05:03:29,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:03:29,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:29,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:29,456 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:29,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 05:03:29,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:03:29,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:03:29,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 05:03:29,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 05:03:29,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:03:29,527 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 05:03:29,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773533116] [2023-02-17 05:03:29,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:29,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515329049] [2023-02-17 05:03:29,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515329049] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:03:29,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:03:29,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-17 05:03:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913674444] [2023-02-17 05:03:29,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:03:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 05:03:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:29,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 05:03:29,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-17 05:03:29,530 INFO L87 Difference]: Start difference. First operand 100 states and 122 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 05:03:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:29,625 INFO L93 Difference]: Finished difference Result 215 states and 261 transitions. [2023-02-17 05:03:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 05:03:29,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-02-17 05:03:29,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:29,626 INFO L225 Difference]: With dead ends: 215 [2023-02-17 05:03:29,627 INFO L226 Difference]: Without dead ends: 112 [2023-02-17 05:03:29,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-17 05:03:29,628 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 104 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:29,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 122 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:03:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-17 05:03:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 86. [2023-02-17 05:03:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 73 states have (on average 1.1917808219178083) internal successors, (87), 74 states have internal predecessors, (87), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 05:03:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2023-02-17 05:03:29,642 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 40 [2023-02-17 05:03:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:29,642 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2023-02-17 05:03:29,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 05:03:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2023-02-17 05:03:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-17 05:03:29,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:29,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:29,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 05:03:29,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:29,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash -291961609, now seen corresponding path program 2 times [2023-02-17 05:03:29,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:29,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645810155] [2023-02-17 05:03:29,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:29,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:29,855 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:29,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013817366] [2023-02-17 05:03:29,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:03:29,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:29,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:29,857 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:29,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 05:03:29,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:03:29,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:03:29,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 05:03:29,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-17 05:03:29,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:03:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 05:03:29,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:29,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645810155] [2023-02-17 05:03:29,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:29,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013817366] [2023-02-17 05:03:29,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013817366] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:03:29,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:03:29,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-17 05:03:29,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563292806] [2023-02-17 05:03:29,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:03:29,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 05:03:29,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 05:03:29,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-17 05:03:29,929 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 05:03:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:30,051 INFO L93 Difference]: Finished difference Result 153 states and 190 transitions. [2023-02-17 05:03:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 05:03:30,052 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2023-02-17 05:03:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:30,052 INFO L225 Difference]: With dead ends: 153 [2023-02-17 05:03:30,053 INFO L226 Difference]: Without dead ends: 112 [2023-02-17 05:03:30,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-17 05:03:30,054 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 42 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:30,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 115 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:03:30,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-17 05:03:30,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2023-02-17 05:03:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-17 05:03:30,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2023-02-17 05:03:30,067 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 40 [2023-02-17 05:03:30,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:30,067 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2023-02-17 05:03:30,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 05:03:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2023-02-17 05:03:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-17 05:03:30,068 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:30,068 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:30,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 05:03:30,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:30,292 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:30,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash 441313725, now seen corresponding path program 3 times [2023-02-17 05:03:30,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:30,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045355154] [2023-02-17 05:03:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:30,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:30,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:30,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [421605932] [2023-02-17 05:03:30,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:03:30,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:30,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:30,302 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:30,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 05:03:30,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-17 05:03:30,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:03:30,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 05:03:30,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-02-17 05:03:30,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:03:30,510 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-17 05:03:30,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:30,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045355154] [2023-02-17 05:03:30,511 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:30,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421605932] [2023-02-17 05:03:30,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421605932] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:03:30,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:03:30,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2023-02-17 05:03:30,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586207708] [2023-02-17 05:03:30,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:03:30,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 05:03:30,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:30,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 05:03:30,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2023-02-17 05:03:30,513 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 05:03:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:30,739 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2023-02-17 05:03:30,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-17 05:03:30,740 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2023-02-17 05:03:30,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:30,741 INFO L225 Difference]: With dead ends: 138 [2023-02-17 05:03:30,741 INFO L226 Difference]: Without dead ends: 134 [2023-02-17 05:03:30,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2023-02-17 05:03:30,743 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 97 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:30,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 140 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:03:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-17 05:03:30,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 86. [2023-02-17 05:03:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 76 states have internal predecessors, (89), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 05:03:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2023-02-17 05:03:30,761 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 47 [2023-02-17 05:03:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:30,762 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2023-02-17 05:03:30,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 15 states have internal predecessors, (46), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 05:03:30,762 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2023-02-17 05:03:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 05:03:30,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:30,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:30,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 05:03:30,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-17 05:03:30,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash -166116396, now seen corresponding path program 3 times [2023-02-17 05:03:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:30,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545661256] [2023-02-17 05:03:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:30,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:30,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720783289] [2023-02-17 05:03:30,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:03:30,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:30,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:31,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:31,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 05:03:31,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-17 05:03:31,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:03:31,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 05:03:31,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 05:03:31,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:03:31,329 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-17 05:03:31,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 05:03:31,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545661256] [2023-02-17 05:03:31,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 05:03:31,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720783289] [2023-02-17 05:03:31,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720783289] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:03:31,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:03:31,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-02-17 05:03:31,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616067969] [2023-02-17 05:03:31,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:03:31,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 05:03:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 05:03:31,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 05:03:31,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-17 05:03:31,331 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 05:03:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:03:31,387 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2023-02-17 05:03:31,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 05:03:31,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2023-02-17 05:03:31,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:03:31,388 INFO L225 Difference]: With dead ends: 97 [2023-02-17 05:03:31,388 INFO L226 Difference]: Without dead ends: 55 [2023-02-17 05:03:31,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-02-17 05:03:31,389 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 39 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:03:31,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 76 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 05:03:31,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-17 05:03:31,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-02-17 05:03:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 47 states have internal predecessors, (55), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 05:03:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2023-02-17 05:03:31,395 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 50 [2023-02-17 05:03:31,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:03:31,395 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2023-02-17 05:03:31,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 05:03:31,396 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2023-02-17 05:03:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-17 05:03:31,396 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:03:31,396 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:03:31,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 05:03:31,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:31,602 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:03:31,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:03:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash -4709032, now seen corresponding path program 4 times [2023-02-17 05:03:31,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:03:31,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292569147] [2023-02-17 05:03:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:03:31,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:03:31,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 05:03:31,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1060572144] [2023-02-17 05:03:31,610 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 05:03:31,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 05:03:31,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:03:31,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 05:03:31,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 05:03:31,788 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 05:03:31,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:03:31,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 75 conjunts are in the unsatisfiable core [2023-02-17 05:03:31,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:03:31,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2023-02-17 05:03:31,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:03:31,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2023-02-17 05:03:31,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:03:31,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:03:31,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 126 [2023-02-17 05:03:31,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:03:31,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 05:03:31,931 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:03:31,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 147 treesize of output 240 [2023-02-17 05:03:34,789 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 05:03:34,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 38 select indices, 38 select index equivalence classes, 1 disjoint index pairs (out of 703 index pairs), introduced 38 new quantified variables, introduced 741 case distinctions, treesize of input 2279 treesize of output 25285